Straw-burning stove



(No Model.) 2 sheetssheet 1. D. A. ROBINSON 8v D. R. HOOPES.-

STRAW BURNING STVE.

No. 499,330. Patented June 13, l1893.

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D. A.'R0B1Nso1\ sa DyR. HooPEs. STRAW BURNING STOVE.

No. 499,330. Patented June 13,1893.

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UNITED STATES PATENT OFFICE.

DIGHTON A. ROBINSON AND DAVID R. HOOPES, OF MINNEAPOLIS, MINNESOTA.

STRAW- BU RN N G' STOVE.

SPECIFICATION forming part of Letters Patent No. 499,330, dated June 13, 1893.

Application filed March 1l, 1893. Serial No. 465.501. (No model.)

To all whom it may concern.-

Be it known that we, DIGIITON A. ROBIN- soN and DAVID R. HooPEs, of Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Straw-Burning Stoves, of which the following is a specification.

Our invention relates to straw-burning stoves, and the objects of the invention are to improve the construction of such stoves; to so arrange the cartridges therein as to increase the lasting qualities of the straw, and to obtain a greater heat not only in the oven but upon the top of the stove. Y

My invention consists in general in the construction and combination hereinafter described and particularly pointed out in the claims.

The invention will be more readily understood by reference to the accompanying drawings forming a part of this specification, and in which- Figure 1 is a front view of a straw-burning stove embodying our invention, with one-half of the front broken away to show the interiorconstruction. Fig. 2 is a longitudinal section on the line -ac of Fig. 1. Fig. 3 is a cross section on the line y-y of Fig. 2, and showing the cartridges of a different construction than those of Fig. 2. Fig.4 is a longitudinal cross section of one of the cartridges shownin Fig. 4. Fig. 5 is a detail perspective view of this'cartridge.

As shown in the drawings, 2 represents thecasing ot' the stove, which is preferably rectangular in its form, and is provided with a base 3 and a top 4 having griddle holes, and griddles 5. The smoke outlet 6 is arranged at the rear end of the stove and connects with the chimney. A wall 7 extends across between the sides of the stove at points parallel to the end wall thereof, and at its lower end meets the top and bottom walls 8 and 9 of the oven, the opposite end of which is composed by a cross wall 10. The oven preferably opens through both sides of the stove, as shown in Fig. 3. A large chamber l1 is made above the oven between the top thereof and the top of the stove, and the duct 12 extending around the oven communicates with the indirect outlet duct 13, from which the products of combustion pass into the chimney when thedamper 14 is thrown into the position shown by dotted lines. When in the position indicated, the products of combustion will, instead of passing around the oven, pass directly from the chamber 11 into the outlet 6. The fuel cartridges 15 and 16 are inserted into the chamber 11 through the door casings 17 closed by the doors 17S arranged on the front end of the stove. The cartridges are supported by the horizontal and longitudinal rods 19 extending between the front and the back of the stove and of less distance apart than the diameter of the cartridges. These rods it will be seen, form most convenient slides so that the cartridges may be very easily and readily removed upon the opening of the doors. The door is provided with a draft opening and regulator damper 20 through which the air is admitted to the fuel. The

lrear end of each cartridgeisleft entirely open so that the straw may be easily inserted and packet therein. The forward end of the`cartridge is entirely closed by an end wal122 except for a small opening left in one side thereof andthrough which the air passes along the top of Vthe burning straw which is lighted through said opening. The top of the `cartridges have a series of perforations 23 through which the Iiames may pass directly so as to very eifectually heat the top of the stove at all points.

To form a duct for the air and for the products of combustion arising from the burning fuel within the cartridge, I either provide an extension upon the cartridge like unto the extension or channel 25 shown in Figs. 5, 4 and 5; or, in place thereof, arrange a series of separated bars in a semicircular form within the body of the cartridge, as shown in Figs. 1 and 2. These prevent the straw from being so closely pressed against the perforated wall of the cartridge as to prevent the free passage of air. The straw may be pressed into either of these cartridges by hand or machinery, and, in order to hold the same therein to prevent the natural spring of the material from forcing out a portion, several square rings 28 are arranged within the cartridges at right an` gles to the axis thereof forming shoulders behind Which the straw or shavings or like material is held.

Having thus described our invention, we claim as new and desire to secure by Letters Patent- 1. The combination in a straw burning stove, of a stove casing with an oven arranged in the lower part thereof, the stove top provided with griddle holes and griddles, and one or more fuel holding cartridges horizontally arranged between said top and said oven, one end of said cartridge being open and the other being closed, save for a constructed draft opening, and said cartridge having a perforated top, substantially as described.

2. The combination in a straw burning stove, of the casing with the top and bottom thereof, the top provided with griddle holes, the oven arranged in a lower part of said casing, the duct extending about said oven, the indirect duct 13, a chamber 14 to close said duct, two or more fuel cartridges horizontally arranged in the space ybetween said oven and the stove top, the doors through which said cartridges are inserted, supports for said cartridges, draft openings in said/ doors and in the outer ends of said cartridges, and said cartridges having perforated Walls and retaining rings 28, substantially as described.

3. The combination in a straw burning stove, of an inclosing casing, with a cartridge arranged horizontally therein, the inner end of said cartridge being open, and the outer end being closed, except for a small eccentrically placed draft opening, arranged near the top of the cartridge.

4. The combination, in a strawburning stove of an inclosing casing with the smoke outlet and a cartridge arranged horizontally within said casing and provided with alongitudinal duct arrranged in its side, one end of the cartridge being open and the other end closed, except for the area of said duct, and the cartridge being provided with perforations in its top. substantially as described.

In testimony whereof we have hereunto set our hands this 7 th day of March, 1893.

DIGHTON A. ROBINSON. DAVID R. I-IOOPES.

In presence of-V A. C. PAUL, C. G. HAWLEY. 

